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International journal of architectural heritage
Taylor and Francis
International journal of architectural heritage

Taylor and Francis

季刊

1558-3058

International journal of architectural heritage/Journal International journal of architectural heritageEIAHCI
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    Inelastic Behavior of Mortise-Tenon Jointed Traditional Timber Frame with Free-Standing Columns

    Yu, PanLi, TieyingYang, Qingshan
    1059-1076页
    查看更多>>摘要：This paper aims to study lateral behavior of the semi-mortise-tenon (SMT) jointed frame with free-standing columns with elastic-plastic deformations in the traditional timber building. The frictional and compressive forces at contact interfaces of SMT connection are calculated through the volumes of elastic and yielding deformations perpendicular-to-grain, and the compressive force is analyzed considering the elastic and yielding deformations parallel-to-grain at the bottom of column. The elastic-plastic behavior of timber frame with SMT and column foot (CF) connections under different vertical loads is assessed. The results reflect that the main plastic deformation of the timber frame occurs at SMT connections perpendicular-to-grain, and the effect of the plastic deformations parallel-to-grain at CF of the timber frame on its lateral resistance is relatively small, the lateral resistance of the wood frame shows a trilinear characteristic. Moreover, the gravity load of the upper structure does not directly affect the plastic deformation perpendicular-to-grain at SMT connections-the SMT connection of the timber frame with a larger gravity load of an upper structure is more likely in the plastic stage than that of a smaller gravity load of an upper structure.
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    Damage Assessment Through the Use of SBAS-DInsar Data: An Application to the "Vittorino da Feltre" Masonry School Building in Rome

    Miano, A.Di Carlo, F.Mele, A.Bonano, M....
    1077-1096页
    查看更多>>摘要：The detection and monitoring of deformation patterns induced by causes of various nature is fundamental to prevent and mitigate the associated risk. To this aim, one of the most innovative, non-invasive monitoring approaches is based on the use of satellite radar images through the advanced multi-temporal Differential Interferometry Synthetic Aperture Radar (DInSAR) technique, which is able to detect deformations induced by slowly evolving phenomena. In this work, the multi-temporal DInSAR technique referred to as full resolution SBAS approach is exploited for the monitoring of the ground deformations and their effects on the "Vittorino da Feltre" school building located in the city of Rome (Italy), which is undergoing a retrofitting project. The displacement measurements were obtained by using the COSMO-SkyMed satellite dataset related to the city of Rome during the 2011-2019 time interval, processed with full resolution Small. The damage progression during the last years has been evaluated by comparing a recent survey of the structural damage with the previously available ones. An integration of SAR-derived data and outcomes of the on-site damage surveys is presented, aimed to perform a damage assessment of the structure using literature scales of damage.
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    Identification of the Damages and Abnormal Objects in Tibetan Stone Walls Based on GPR Data Analysis

    Chang, PengFeng, QiugeLu, ZhengchaoYang, Na...
    1097-1116页
    查看更多>>摘要：Based on the amplitude attribute analysis of ground penetrating radar (GPR) data, this paper applies GPR to the identification of internal damages and abnormal objects in stone walls of Tibetan ruins. The corresponding relationship between the characteristics of internal damages and abnormal objects and the radar data is explored through the Tibetan stone walls (TSWs) simulation test. The identification of location and size of the damages and abnormal objects in TSWs is realized based on the Mahalanobis distance abnormal data discrimination method. Using the normal distribution and the noncentral chi-square distribution, the identification law of types of the damages and abnormal objects is constructed, which takes root mean square (RMS) amplitude and interface reflection coefficient as the characteristic values. The field detection results of TSWs at three Tibetan sites are taken as an extension and supplement to the simulation results, and a set of identification atlas for the location, size and type of the internal damages and abnormal objects in TSWs is established. The application results of the identification atlas were verified by the field detection and the results show that the atlas has a high accuracy, which can significantly improve the efficiency of the identification, and can provide a basis for the performance research, protection and maintenance of TSWs.
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    Churches Acoustics as Intangible Cultural Heritage: Experimental and Numerical Characterization of the Temple of San Biagio

    Ricciutelli, AlessandroLori, ValterLops, CamillaSerpilli, Fabio...
    1117-1130页
    查看更多>>摘要：The acoustic properties of churches are, to date, as much a cultural asset as their architectural features. The study, understanding and conservation of acoustic phenomena that characterize liturgical spaces, to date, make use of new technologies and methodologies that facilitate their practice. The study presented here analyzes the acoustic phenomena that characterize the Temple of San Biagio (Montepulciano, Tuscany, Italy). It makes use of experimental acoustic surveying and the aid of the laser scanning surveying technique for the creation of the geometry, subsequently adopted for numerical acoustic modeling of the church in Odeon Acoustics software, used for the study of its acoustic characteristics. The selected methodology allowed us to delve into dynamics often encountered in acoustic simulations, such as the calibration of numerical models and the influence of the mesh number of the generated geometric models, and to understand the acoustic characteristics of the church.
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    Upgrading of Fire Resistance to Architectural Heritage Escape Route Timber Doors

    Hauko, Anne-MaritWedvik, BarbroBergius, Mikael
    1131-1142页
    查看更多>>摘要：Original timber stairwell doors in historic masonry apartment buildings of architectural heritage value can be found in the larger cities of Norway. In Oslo, there are around 4000 such buildings, of which many still hold preserved original stairwell doors. The doors often have glass with decorative patterns in the upper parts, and timber panels on the lower part. Old residential buildings are vulnerable to fire due to the building construction and need fire protection upgrades. The stairwell doors are critical elements to prevent fire spread and to keep evacuation routes safe, so their function and condition are important to the level of fire protection in the building. The research work in this paper aims to find retrofit methods for upgrading the fire resistance of these types of doors so they maintain their integrity and insulating properties for up to 30 minutes, at the same time as they maintain their architectural expression. The upgrades must be as little intrusive and destructive as possible. Intermediate scale tests were carried out in a fire resistance test furnace, using different door configurations. The tests lasted between 30 minutes and 42 minutes, with a thermal exposure from the standard time/temperature curve described in EN 1363-1. The results from the tests showed that 40 mm thick laminated wood could withstand up to 30 minutes of fire exposure, thin timber panels could be upgraded using stone wool and robust gypsum boards type R, and that fire-resistant glass could be mounted on the inside of the original glass in different ways. Visual observations indicate that adding smoke seals inside the door leaf are effective for stopping cold and hot smoke. The solutions presented enables the preservation of the original doors' architectural design, their historical values and aesthetic character.
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    Site Specific Hazard Assessment and Multi-Level Seismic Performance Evaluation of Historical Mosque

    Saygili, OezdenLemos, Jose V.Moghimi, Saed
    1143-1163页
    查看更多>>摘要：This study highlights the continued need for numerical simulation methods to predict the earthquake response and damage of masonry mosques, despite recent advances in research. The Kamanli Masonry Mosque in Izmir, Turkey was selected as a case study for this purpose. A probabilistic seismic hazard analysis was conducted using a uniform Poisson process model with 50-year probabilities of 2%, 10%, and 50%. Earthquakes from seismic sources were excluded based on time and distance, and the annual recurrence relationships of the source areas were determined using the least squares method. The non-linear response of a masonry mosque was investigated using the discrete element approach to study the impact of site conditions on its structural performance. Nonlinear dynamic analyses were conducted using records representing seismic events with 475- and 72-year return periods. The results indicated that the mosque is highly vulnerable to earthquakes, as the 475-year records resulted in significant damage and partial collapse. Damage indicators were employed to assess the response to the 72-year records, highlighting the most vulnerable areas that should be prioritized in any restoration efforts.
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    Development and Validation of Empirical Formulations for Predicting the Frequency of Historic Masonry Towers

    Testa, FrancescoBarontini, AlbertoLourenco, Paulo B.
    1164-1184页
    查看更多>>摘要：In the present work, a large database comprising a set of features related to geometry, type of boundary condition, type of material and experimental value of the first natural frequency for 184 historic masonry towers is collected. The database is then used to develop empirical formulas for the estimation of the fundamental frequency related to the first bending mode. The data are divided into a training set and a validation set for a correct assessment of the empirical equations, generated through power regression and artificial neural network. Different combinations of features are exploited as independent variables to investigate their influence on the dynamic behaviour of masonry towers. To improve the accuracy of the prediction, distinct models are generated for specific clusters with likely homogeneous behaviour, according to the boundary conditions (isolated or bounded) and type of materials (brick, stone or mixed masonry).
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    Quantitative Evaluation Method of Structural Safety Status of Timber Lounge Bridge with Cantilever Beams-A Case Study of the Yongqing Bridge

    Chen, QiChun, QingZhang, Chengwen
    1185-1203页
    查看更多>>摘要：The timber lounge bridge with cantilever beams is a kind of bridge architectural heritage that is different from the simply supported timber beam bridge and timber arch lounge bridge in typology. It has important historical, artistic, and scientific values. For the preventive protection and repair of the timber lounge bridge with cantilever beams, this paper proposes a scientific and reliable quantitative evaluation method for its structural safety status, taking the typical timber lounge bridge with cantilever beams, Yongqing Bridge, as a case study. The evaluation consists of three stages: firstly, analyzing the typology of the timber lounge bridge with cantilever beams and recording the deterioration; secondly, establishing the evaluation system and grading criteria for the timber lounge bridge with cantilever beams; thirdly, using the finite element method to calculate the importance of the components and quantitative evaluating the structural safety status of the timber lounge bridge with cantilever beams by using the improved analytic hierarchical process (IAHP) and making the final decision. The results of this study can provide a scientific basis for quantitative evaluation of the structural safety status, preventive protection, and repair of the timber lounge bridge with cantilever beams.
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    The Invisible Beauty of the Zeiss-Dywidag Domes: Topology Optimization of the Triangulated Rebar Grids

    Gaspar, OrsolyaKis, Alexandra E.
    1204-1225页
    查看更多>>摘要：The Zeiss-Dywidag system was a pioneer in the history of thin concrete shells, which impacted and advanced theory and praxis worldwide. This study explains its relevance for the history of gridshells: the first ever built Zeiss-Dywidag dome started out as a geodesic gridshell, sprayed over by concrete. Walther Bauersfeld abandoned his own ingenious design for the first Planetarium in Jena in favour of a lamella-type topology for the equally self-bearing reinforcing grid of the later Zeiss-Dywidag domes. We reconstruct the optimization of the geometry and tessellation of the first built example of the latter, the Schott dome, and suggest possible motivations for the change. Bauersfeld's strikingly advanced theory of equivalent membrane shells, which played an essential role in the process, is published here for the first time. The significance of a unique benchmarking parameter, the so-called bar density (D-value), introduced by Bauersfeld is investigated. Its applicability to assess geometric fitness is assessed by a comparative study of selected grid topologies and geometries.
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    The History of an Alpine Manor House Revealed by Dendrochronology

    Bernabei, MauroBontadi, JarnoFerrari, Salvatore
    1226-1234页
    查看更多>>摘要：The Migazzi palace in Cogolo (Val di Pejo, Trentino, Italy), an important alpine noble residence of medieval origin, was analysed through dendrochronology. The floor and ceiling beams, cladding boards, door lintels, loose timber, and anything that could be dendrochronologically dated were examined. For each room, at least one sample containing the "waney edge" (the last ring before the bark) was found, allowing for precise dating of the different building phases. The results completely changed our knowledge of the palace's history. Initially thought to date back to the 15(th) century, the tower around which the successive structures were built was dated to the first half of the 14(th) century (1332). In the space between the floor and the ceiling below, materials used as filler were found, including wooden elements and parts of footwear. The sole of one shoe was dated to 1501, which frames the cultural context of Lombard influence in which the palace flourished. This work has accurately reconstructed the history of the building, demonstrating the potential offered by intensive and widespread dendrochronological sampling.
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